oj.uz

Submission #64993

# Submission time Handle Problem Language Result Execution time Memory
64993 2018-08-06T11:47:17 Z patrikpavic2 Dango Maker (JOI18_dango_maker) C++17
13 / 100
 114 ms 60900 KB 
#include <cstdio>
#include <cstring>
#include <vector>

using namespace std;

const int N = 3e3 + 50;
const int M = N * N / 5;

vector < int > v[M];

bool bio[M], ty[M];
int mat[M], kk[N][N][2];
char s[N][N];
int n, m, edg, cnt = 1;

int dfs( int node ) {
    if( bio[ node ] ) return 0;
    bio[ node ] = 1;
    for(int sus : v[node]){
        if( mat[ sus ] == -1 || dfs( mat[ sus ]) ) {
            mat[ sus ] = node;
            return 1;
        }
    }
    return 0;
}

int matching( ) {
    int sol = 0;
    memset( mat, -1, sizeof( mat ) );
    for( int i = 1; i < cnt; i++) {
        if(ty[i]) continue;
        sol += dfs(i);

    }
    return sol;
}


int main(){
    memset(s, '.', sizeof(s));
    scanf("%d%d", &n, &m);
    for(int i = 1;i<=n;i++){
        for(int j = 1;j<=m;j++){
            scanf(" %c", &s[i][j]);
        }
    }
    for(int i = 1;i<=n;i++){
        for(int j = 1;j<=m;j++){
            if(s[i][j] != 'G') continue;
            int kol = 0;
            if(s[i - 1][j] == 'R' && s[i + 1][j] == 'W'){
                kk[i][j][0] = cnt;
                cnt++;kol++;
            }
            if(s[i][j - 1] == 'R' && s[i][j + 1] == 'W'){
                ty[cnt] = 1;
                kk[i][j][1] = cnt;
                cnt++;kol++;
            }
            if(kol == 2){
                v[cnt - 1].push_back(cnt - 2);
                v[cnt - 2].push_back(cnt - 1);
                edg++;
            }
        }
    }
    for(int i = 1;i<=n;i++){
        for(int j = 1;j<=m;j++){
            if(i + 1 < n && j + 1 < m && s[i][j] == 'R' && s[i + 1][j] == 'G' && s[i][j + 1] == 'G' && s[i + 2][j] == 'W' && s[i][j + 2] == 'W'){
                v[kk[i + 1][j][0]].push_back(kk[i][j + 1][1]);
                v[kk[i][j + 1][1]].push_back(kk[i + 1][j][0]);
                //printf("AT %d %d\n", i, j);
                edg++;
            }
            if(i > 2 && j > 2 && s[i][j] == 'W' && s[i - 1][j] == 'G' && s[i][j - 1] == 'G' && s[i - 2][j] == 'R' && s[i][j - 2] == 'R'){
                v[kk[i - 1][j][0]].push_back(kk[i][j - 1][1]);
                v[kk[i][j - 1][1]].push_back(kk[i - 1][j][0]);
                //printf("AT %d %d\n", i, j);
                edg++;
            }

        }
    }
    //printf("EDG %d\n", edg);
    printf("%d\n", cnt - matching() - 1);
    return 0;
}

Compilation message

dango_maker.cpp: In function 'int main()':
dango_maker.cpp:43:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &m);
     ~~~~~^~~~~~~~~~~~~~~~
dango_maker.cpp:46:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf(" %c", &s[i][j]);
             ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 60408 KB Output is correct
2 Correct 72 ms 60408 KB Output is correct
3 Correct 52 ms 60424 KB Output is correct
4 Correct 67 ms 60500 KB Output is correct
5 Correct 63 ms 60500 KB Output is correct
6 Correct 66 ms 60576 KB Output is correct
7 Correct 59 ms 60624 KB Output is correct
8 Correct 65 ms 60752 KB Output is correct
9 Correct 56 ms 60752 KB Output is correct
10 Correct 54 ms 60752 KB Output is correct
11 Correct 55 ms 60752 KB Output is correct
12 Correct 72 ms 60752 KB Output is correct
13 Correct 68 ms 60752 KB Output is correct
14 Correct 52 ms 60752 KB Output is correct
15 Correct 56 ms 60796 KB Output is correct
16 Correct 55 ms 60900 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 60408 KB Output is correct
2 Correct 72 ms 60408 KB Output is correct
3 Correct 52 ms 60424 KB Output is correct
4 Correct 67 ms 60500 KB Output is correct
5 Correct 63 ms 60500 KB Output is correct
6 Correct 66 ms 60576 KB Output is correct
7 Correct 59 ms 60624 KB Output is correct
8 Correct 65 ms 60752 KB Output is correct
9 Correct 56 ms 60752 KB Output is correct
10 Correct 54 ms 60752 KB Output is correct
11 Correct 55 ms 60752 KB Output is correct
12 Correct 72 ms 60752 KB Output is correct
13 Correct 68 ms 60752 KB Output is correct
14 Correct 52 ms 60752 KB Output is correct
15 Correct 56 ms 60796 KB Output is correct
16 Correct 55 ms 60900 KB Output is correct
17 Correct 57 ms 60900 KB Output is correct
18 Correct 65 ms 60900 KB Output is correct
19 Correct 73 ms 60900 KB Output is correct
20 Correct 59 ms 60900 KB Output is correct
21 Correct 61 ms 60900 KB Output is correct
22 Correct 53 ms 60900 KB Output is correct
23 Correct 60 ms 60900 KB Output is correct
24 Correct 61 ms 60900 KB Output is correct
25 Correct 54 ms 60900 KB Output is correct
26 Correct 64 ms 60900 KB Output is correct
27 Incorrect 114 ms 60900 KB Output isn't correct
28 Halted 0 ms 0 KB -

Subtask #3
0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 60408 KB Output is correct
2 Correct 72 ms 60408 KB Output is correct
3 Correct 52 ms 60424 KB Output is correct
4 Correct 67 ms 60500 KB Output is correct
5 Correct 63 ms 60500 KB Output is correct
6 Correct 66 ms 60576 KB Output is correct
7 Correct 59 ms 60624 KB Output is correct
8 Correct 65 ms 60752 KB Output is correct
9 Correct 56 ms 60752 KB Output is correct
10 Correct 54 ms 60752 KB Output is correct
11 Correct 55 ms 60752 KB Output is correct
12 Correct 72 ms 60752 KB Output is correct
13 Correct 68 ms 60752 KB Output is correct
14 Correct 52 ms 60752 KB Output is correct
15 Correct 56 ms 60796 KB Output is correct
16 Correct 55 ms 60900 KB Output is correct
17 Correct 57 ms 60900 KB Output is correct
18 Correct 65 ms 60900 KB Output is correct
19 Correct 73 ms 60900 KB Output is correct
20 Correct 59 ms 60900 KB Output is correct
21 Correct 61 ms 60900 KB Output is correct
22 Correct 53 ms 60900 KB Output is correct
23 Correct 60 ms 60900 KB Output is correct
24 Correct 61 ms 60900 KB Output is correct
25 Correct 54 ms 60900 KB Output is correct
26 Correct 64 ms 60900 KB Output is correct
27 Incorrect 114 ms 60900 KB Output isn't correct
28 Halted 0 ms 0 KB -